Ipfatt W(ø) cosnß
Ip = Point light source intensity (white light)
fatt = Light-source Attenuation
W(ø) = Fraction of specullarly reflected light (usually a constant, ks)
n = Specular reflection exponent
cos ß = R * V
I = Iaka + Ipkd (N*L)*fatt
Specular Component = Ipfatt W(ø) cosnß
This term represents the amount of WHITE light that shouldbe added!